mating gearbox to prop shaft

phoenix · Post by **phoenix** » Sat Jan 30, 2021 10:35 am

!965 S1 4.2 . Hi I am having trouble bolting them together I seem about 6mm short. The engine and box have all the mounts fitted but the rear assembly still needs final tightening . At the moment the front is on axle stands and the rear on pallets under the axle/ suspension . Do you think the prop will move that much when finally tightened.
Another thing does the vacuum fit at an angle on the bulkhead.

christopher storey · Post by **christopher storey** » Sat Jan 30, 2021 11:12 am

1.have you extended the sliding splined joint on the prop shaft ?

2. Yes, at about a 45 degree angle

phoenix · Post by **phoenix** » Sun Jan 31, 2021 2:07 pm

Do all S1 4.2 prop shafts have splines ?

christopher storey · Post by **christopher storey** » Sun Jan 31, 2021 4:57 pm

AFAIK yes, they should do. Perhaps others will comment. Has yours not got a splined joint / Or is it perhaps seized ?

Post by **mgcjag** » Sun Jan 31, 2021 5:10 pm

Hi Bryan...yes its just easier to ask....but have you got a service manual and parts catalogue yet...it will help..we even have them in the knowledge base section for use once you have your own copy.....Steve

phoenix · Post by **phoenix** » Sun Jan 31, 2021 6:05 pm

Tomorrow I will have a look. Should the splined joint be at the front or back. If it does have one it must be siezed . Apart from a big hammer or maybe heat is there anyway of freeind it. Thanks guys. Ps it has been stood over 20 years.

abowie · Post by **abowie** » Sun Jan 31, 2021 8:09 pm

Splines at the front. Gives you around 2 to 3" of movement.

If it is seized you'll need to free it up.

phoenix · Post by **phoenix** » Mon Feb 01, 2021 12:11 pm

Managed it. Got 2 bolts on fairly tight then a few taps with a big hammer trying not to break anything and it suddenly jumped . Thanks guys . Bryan and on and on .

vee12eman · Post by **vee12eman** » Mon Feb 01, 2021 9:50 pm

Hi,

I hate to say this, but really you should consider removing the prop shaft to remove corrosion and grease the sliding joint.

Regards,

Simon

christopher storey · Post by **christopher storey** » Mon Feb 01, 2021 10:19 pm

Well , I agree with Simon on this. You perhaps do not need to remove the shaft, but at least withdraw the gaiter and get as much anti seize compound into the joint as possible . Diesel is as good a fluid as any , and then get as much graphite grease in as you can

phoenix · Post by **phoenix** » Thu Feb 04, 2021 3:00 pm

Ok I had to remove engine UG. We found that the lowest bolt for the water pump had been snapped and we could not get to it through the picture frame . I did not want to risk not doing it the find a water leak when all the engine completed and run. Now drilled out and re tapped . So I will now be able to grease the prop shaft slide joint. Thanks for your help this is the first Jag for me. Bryan

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mating gearbox to prop shaft

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